The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1987
Filed:
Nov. 10, 1983
Applicant:
Inventors:
Kasaku Masuda, Akishima, JP;
Ryosuke Sato, Hino, JP;
Fumio Ishii, Hino, JP;
Kazuhiko Kimura, Hachioji, JP;
Hidetaka Ninomiya, Hachioji, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546141 ; 546279 ; 548162 ; 548 / ; 548195 ; 548221 ; 548251 ; 548255 ; 548261 ; 548263 ; 548327 ; 548336 ; 548364 ; 548365 ;
Abstract
A method for synthesizing a magenta coupler. The synthesis is carried out through (1) 3-pyrazoline-5-ones which are obtained by substituting a blocking group at the nitrogen atom in the second position thereof; or (2) pyrazoles which are obtained by substituting a blocking group at the hydroxyl group bonded in the fifth position thereof. The magenta coupler obtained has the formula ##STR1## wherein R.sub.1 is an aryl or heterocyclic group, R.sub.2 is an acylamide, anilino or ureido group, and R3 is an alkyl, aryl, or heterocyclic group.